Step 1: With Outlook 365 open, identify and click on the e-mail that you believe is suspicious.
Step 2: In the upper right hand corner, click on the Phish Alert button in the Phishing section.
Step 3: Once clicked, you’ll see a message confirming that you want to report the e-mail. Click on Yes if you’d like to report it.
Step 4: Once reported, the e-mail will be removed from your inbox and reported for further investigation and analysis.